JP3189322U - Thermal insulation for pipe end fittings - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optimum heat insulating material for a pipe joint structure having a loose flange having a bolt hole forming portion bulging on the outer periphery. SOLUTION: A split body is combined and covered from the outside of a pipe end flanged pipe joint, which matches the side shape of a loose flange and has a bolt d or nut e storage recess 14 on the flange contact surface. An internal heat insulating material 1 formed of a cushion board made of artificial mineral fiber and an inner peripheral surface matching the shape of the outer peripheral surface of the loose flange, and the internal heat insulating material 1 mounted on both sides of the loose flange and the outer peripheral surface of the loose flange are provided. It is composed of an external heat insulating material 2 formed of a foamed resin to be coated. [Selection diagram] Fig. 4

Description

  TECHNICAL FIELD The present invention relates to a heat insulating material for a pipe end protruding pipe joint.

  As shown in FIG. 3, the pipe end extending pipe joint is formed with a flange b at the end of the pipe a by plastic working, a seal f is interposed between the flanges b, and the facing flange b is loose flanged. c, a bolt d, and a nut e, and the loose flange c has a shape in which a bolt hole forming portion bulges on the outer periphery (see Patent Document 1).

  In addition, Patent Document 2 adopts a double structure of an internal heat insulating material and an external heat insulating material as a heat insulating structure that realizes cold insulation and generation of dew condensation at the flange joint portion of the pipe line, and bolts at the flange connection points. -It has been disclosed to employ an amorphous heat insulating material so as to correspond to the uneven surface of the nut, or a molded product of a foamed plastic body so as to correspond to the uneven surface of the bolt and nut.

  Patent Document 3 discloses a split flange heat insulating material provided with an insertion portion inserted between the heads of bolts or nuts on the inner peripheral surface.

Registered Utility Model No. 3162992. JP-A-10-185082. JP 2007-78076 A.

  Since the heat insulating material having a single structure disclosed in Patent Document 3 has a complicated inner peripheral portion and is mounted from the outer peripheral direction of the pipe, a gap on the uneven surface of the bolt / nut becomes large. End up.

  In addition, in the adoption of the double-structured heat insulating material disclosed in Patent Document 2, the insulative heat insulating material has a complicated mounting operation and may have an uneven coating. In addition, when the internal heat insulating material of the foamed resin molded product is adopted, it cannot be dealt with if the bolts and nuts are slightly resized.

  In addition, in the heat insulating material of the above-mentioned double-structured foamed resin molded article, the outer peripheral surface of the internal heat insulating material and the inner peripheral surface of the external heat insulating material are cylindrical surfaces because the general flange joint covering is considered. It cannot be used when positioning is required.

  Therefore, the present invention is a new heat insulating material for pipe end fitting pipe joints that employs an internal heat insulating material that eliminates the problems of the double structure and the internal heat insulating material being an irregular heat insulating material and the problems of foamed resin molded products. Is proposed.

  The heat insulating material for a pipe end protruding pipe joint according to claim 1 of the present invention interposes a seal between the flange parts of the pipe end part, and clamps the flange part facing the loose flange using bolts and nuts, The pipe end protruding pipe joint formed by projecting the bolt hole forming portion in the loose flange in the outer circumferential direction is coated by combining the divided bodies from the outside, and matches the side shape of the loose flange, and the flange An internal heat insulating material formed of a cushion board made of artificial mineral fiber with a concave recess for bolts or nuts on the abutment surface, an inner peripheral surface that matches the outer peripheral surface shape of the loose flange, and mounted on both sides of the loose flange It is characterized by comprising an internal heat insulating material and an external heat insulating material formed of a foamed resin covering the outer peripheral surface of the loose flange.

  Thus, the internal heat insulating material is attached to the side of the loose flange for the pipe end fitting pipe joint, and the whole is further covered with the external heat insulating material. To do.

  Further, the heat insulating material for a pipe end extending pipe joint according to claim 1 of the present invention is formed by punching an artificial mineral fiber cushion board having an appropriate thickness so as to conform to a loose flange shape, and a part thereof. The internal heat insulating material is formed by punching through holes corresponding to the storage recesses and laminating and bonding the punching members, and the storage recesses such as bolts can be easily formed.

  The configuration of the present invention is as described above. By adopting a combination of an internal heat insulating material that is deformable and having a predetermined shape and an external heat insulating material made of foamed resin, the pipe end protruding pipe joint using the loose flange is adopted. Even if the installation is easy and there is some error in the dimensions of the bolts and nuts, the error is absorbed by the cushioning property of the internal heat insulating material to prevent the generation of internal space.

The perspective view of the internal heat insulating material of embodiment of this invention. The perspective view of the external heat insulating material. It is explanatory drawing of the pipe joint of the attachment object, (A) is a perspective view, (B) is a partially cut front view. Explanatory drawing of the same use state.

  Next, an embodiment of the present invention will be described. The pipe joint to which the heat insulating material according to the present invention is attached has the structure shown in FIG. 3 as described above, and the heat insulating material shown in the embodiment includes the internal heat insulating material 1 and the external heat insulating material 2. Is.

  The internal heat insulating material 1 and the external heat insulating material 2 are attached and covered from the outside with respect to the pipe joint, and are formed by four internal heat insulating materials and two external heat insulating materials. Of course, what is necessary is just to be able to coat | cover the whole pipe joint, and it is not limited to the number of the said division bodies.

  The internal heat insulating material 1 is formed from an artificial mineral fiber cushion board made of glass wool or rock wool, and the outer peripheral shape matches the side shape of the loose flange c. That is, the inner peripheral side edge 11 that matches the half circumference of the pipe a, the joining edge 12 that crosses the loose flange c in the diametrical direction, and the outer circumference that matches the outer diameter of the loose flange c and that corresponds to the bulging portion for the bolt hole It is formed in a shape having side edges 13.

  The internal heat insulating material 1 is produced by punching out the appropriate shape of the artificial mineral fiber cushion board into the shape described above, and laminating and bonding the punched boards 1A, 1B... To a predetermined thickness. In particular, when punching, the through holes 14 corresponding to the sizes of the bolts d and nuts e are punched at locations corresponding to the bulged portions for the bolt holes for the number of sheets corresponding to a certain thickness. As described above, a storage recess 14a is formed on one surface of the internal heat insulating material 1 formed by laminating and bonding.

  The external heat insulating material 2 is manufactured by mold manufacturing or cutting out from a boat using a foamed resin material such as polystyrene foam or rigid urethane foam, and the whole is in a vertically divided shape of a cylindrical body, and the inner peripheral surface 21 is formed as described above. The inner heat insulating material 1 has a shape that matches the outer peripheral side edge 13, and its length is twice the thickness of the inner heat insulating material 1 plus the thickness of the loose flange c.

  Thus, the internal heat insulating material 1 is mounted from the outside in the tube axial direction with respect to the pipe joint so that the bolt d and the nut e are accommodated in the housing recess 14a, and the internal heat insulating member 1 is connected to the pipe a and the loose flange c. Adhere to. Further, the outer heat insulating material 2 covers the outer peripheral side edge 13 of the internal heat insulating material 1 and the entire outer peripheral end surface of the loose flange c. In particular, the inner peripheral surface 21 of the outer heat insulating material 2 is the outer peripheral side edge 13 of the internal heat insulating material 1 and Since it is in close contact with the outer peripheral end surface of the loose flange c, the space existing inside is only a small space sandwiched between the loose flanges c on the outer periphery of the flange b, and the joint portion in the pipe a is completely insulated. become.

  Of course, the exposed piping portion on which the inner and outer heat insulating materials 1 and 2 are mounted is subjected to the existing heat retaining treatment.

DESCRIPTION OF SYMBOLS 1 Internal heat insulating material 11 Inner peripheral side edge 12 Joining edge 13 Outer peripheral side edge 14 Through-hole 14a Storage recessed part 2 External heat insulating material 21 Inner peripheral surface a Pipe b collar c Loose flange d Bolt e Nut f Seal

Claims (2)

  A pipe end protruding by inserting a seal between the flanges of the pipe end, pinching the flange facing the loose flange using bolts and nuts, and projecting the bolt hole forming portion of the loose flange in the outer circumferential direction An artificial mineral fiber cushion boat that covers a pipe joint by combining a split body from the outside and has a side face shape of a loose flange and is provided with a bolt or nut storage recess on the flange contact surface. An internal heat insulating material that is formed with an internal heat insulating material that is formed on the both sides of the loose flange and a foam resin that covers the outer peripheral surface of the loose flange. A heat insulating material for a pipe end pipe fitting characterized by comprising a material.   Cushion boat made of artificial mineral fiber of appropriate thickness is punched to match the shape of the loose flange, and part of it is punched into the through hole corresponding to the storage recess, and the punching members are laminated and bonded to form an internal heat insulating material The heat insulating material for a pipe end protruding pipe joint according to claim 1.

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